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NASA Hubble Space Telescope Collection
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NASA Hubble Space Telescope Collection
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Saturn Seen from Far and Near
Title
Saturn Seen from Far and Near
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Object Name:
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Saturn
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Saturn
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Acknowledgement:
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Acknowledgement
Acknowledgement
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Acknowledgement:
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Acknowledgement
Acknowledgement
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Fast Facts:
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Technical facts about this news release: About the Object Object Name: Saturn Object Description: Planet Distance: The semi-major axis of Saturn's orbit about the sun is 9.5 Astronomical Units (A.U.) or roughly 1.4 billion km. Dimensions: The planet (without rings) has a diameter of roughly 75,000 miles (120,000 km) at the equator. About the Data Data Description: This Hubble image was created from HST data from proposal 9354: E. Karkoschka and M. Tomasko (University of Arizona) Instrument: ACS/HRC Exposure Date(s): March 2003; March 2004 Filters: F439W ("B"), F502N ([O III]), F550W ("V"), F658N (H alpha) About the Image Image Credit: NASA and E. Karkoschka (University of Arizona) Release Date: May 26, 2004 Orientation: Saturn Prior to Cassini Probe's Arrival [ http://imgsrc.hubbl…] About the Cassini Data and Image Data Description : Cassini image of Saturn taken at a range of 15.1 million miles (24.3 million kilometers) from the planet. The view is from 13 degrees below the equator. Instrument: Cassini: Imaging Science Subsystem narrow-angle camera Exposure Dates: May 16, 2004 Filters: blue, green, red Image Credit: NASA/JPL/Space Science Institute Release Date: May 26, 2004
Fast_Facts
Technical facts about this news release: About the Object Object Name: Saturn Object Description: Planet Distance: The semi-major axis of Saturn's orbit about the sun is 9.5 Astronomical Units (A.U.) or roughly 1.4 billion km. Dimensions: The planet (without rings) has a diameter of roughly 75,000 miles (120,000 km) at the equator. About the Data Data Description: This Hubble image was created from HST data from proposal 9354: E. Karkoschka and M. Tomasko (University of Arizona) Instrument: ACS/HRC Exposure Date(s): March 2003; March 2004 Filters: F439W ("B"), F502N ([O III]), F550W ("V"), F658N (H alpha) About the Image Image Credit: NASA and E. Karkoschka (University of Arizona) Release Date: May 26, 2004 Orientation: Saturn Prior to Cassini Probe's Arrival [ http://imgsrc.hubbl…] About the Cassini Data and Image Data Description : Cassini image of Saturn taken at a range of 15.1 million miles (24.3 million kilometers) from the planet. The view is from 13 degrees below the equator. Instrument: Cassini: Imaging Science Subsystem narrow-angle camera Exposure Dates: May 16, 2004 Filters: blue, green, red Image Credit: NASA/JPL/Space Science Institute Release Date: May 26, 2004 Fast Facts
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*Image Type:*: Astronomical
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*Image Type:*: Astronomical
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*Release Date*:May 26, 2004 04:00 PM (EDT)
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*Release Date*:May 26, 2004 04:00 PM (EDT)
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*News Release Number:*: STScI-2004-18e
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*News Release Number:*: STScI-2004-18e
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*Title*:Saturn Seen from Far and Near
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*Title*:Saturn Seen from Far and Near
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*Description*:
As Saturn grows closer through the eyes of the Cassini spacecraft, which is hurtling toward a rendezvous with the ringed world on June 30 (July 1, Universal Time), both Cassini and the Earth-orbiting Hubble Space Telescope snapped spectacular pictures of the planet and its magnificent rings.
Cassini is approaching Saturn at an oblique angle to the Sun and from below the ecliptic plane. Cassini has a very different view of Saturn than Hubble's Earth-centered view. For the first time, astronomers can compare views of equal-sharpness of Saturn from two very different perspectives.
The view from Hubble, taken on March 22, 2004, is so sharp that many individual Saturnian ringlets can be seen. When Cassini returned its picture of Saturn on May 16, it was so close to the planet that the Imaging Science Subsystem narrow-angle camera could not fit the whole planet in its field-of-view. Cassini is still about 12.4 million miles (about 20 million kilometers) away and only 36 days from reaching Saturn.
Hubble's exquisite optics, coupled with the high resolution of its Advanced Camera for Surveys, allow it to take pictures of Saturn which are nearly as sharp as Cassini's, even though Hubble is nearly a billion miles farther from Saturn than Cassini. Cassini will ultimately far exceed the resolution of Hubble during its close encounter with Saturn. Cassini's sharpness began to surpass Hubble's when it came to within 14 million miles (23 million kilometers) of Saturn earlier this month.
Camera exposures in four filters (blue, blue-green, green, and red) were combined to form the Hubble image, to render colors similar to what the eye would see through a telescope focused on Saturn. The subtle pastel colors of ammonia-methane clouds trace a variety of atmospheric dynamics. Saturn displays its familiar banded structure, and haze and clouds of various altitudes. Like Jupiter, all bands are parallel to Saturn's equator. Even the magnificent rings, at nearly their maximum tilt toward Earth, show subtle hues, which indicate the trace chemical differences in their icy composition.
Cassini has two cameras, a wide angle and narrow angle. This narrow angle image was made using a combination of three filters (red, green, blue) and was taken at a range of 15.1 million miles (24.3 million kilometers). The view is from 13 degrees below the equator. Enceladus, one of Saturn's 31 known moons, appears near the south pole at the bottom of the image.
The differences between the Hubble and Cassini images are mainly due to the different sets of filters used.
Over two decades have passed since a spacecraft last visited Saturn ? NASA's Voyager-2 flew by Saturn in August 1981. Since 1990, Hubble has produced high-resolution Saturn images, tracking storms and auroral activity while providing crisp views of the rings over time and from various angles.
Cassini will begin a four-year mission in orbit around Saturn when it arrives on June 30, 2004 PDT (July 1,
note
*Description*:
As Saturn grows closer through the eyes of the Cassini spacecraft, which is hurtling toward a rendezvous with the ringed world on June 30 (July 1, Universal Time), both Cassini and the Earth-orbiting Hubble Space Telescope snapped spectacular pictures of the planet and its magnificent rings.
Cassini is approaching Saturn at an oblique angle to the Sun and from below the ecliptic plane. Cassini has a very different view of Saturn than Hubble's Earth-centered view. For the first time, astronomers can compare views of equal-sharpness of Saturn from two very different perspectives.
The view from Hubble, taken on March 22, 2004, is so sharp that many individual Saturnian ringlets can be seen. When Cassini returned its picture of Saturn on May 16, it was so close to the planet that the Imaging Science Subsystem narrow-angle camera could not fit the whole planet in its field-of-view. Cassini is still about 12.4 million miles (about 20 million kilometers) away and only 36 days from reaching Saturn.
Hubble's exquisite optics, coupled with the high resolution of its Advanced Camera for Surveys, allow it to take pictures of Saturn which are nearly as sharp as Cassini's, even though Hubble is nearly a billion miles farther from Saturn than Cassini. Cassini will ultimately far exceed the resolution of Hubble during its close encounter with Saturn. Cassini's sharpness began to surpass Hubble's when it came to within 14 million miles (23 million kilometers) of Saturn earlier this month.
Camera exposures in four filters (blue, blue-green, green, and red) were combined to form the Hubble image, to render colors similar to what the eye would see through a telescope focused on Saturn. The subtle pastel colors of ammonia-methane clouds trace a variety of atmospheric dynamics. Saturn displays its familiar banded structure, and haze and clouds of various altitudes. Like Jupiter, all bands are parallel to Saturn's equator. Even the magnificent rings, at nearly their maximum tilt toward Earth, show subtle hues, which indicate the trace chemical differences in their icy composition.
Cassini has two cameras, a wide angle and narrow angle. This narrow angle image was made using a combination of three filters (red, green, blue) and was taken at a range of 15.1 million miles (24.3 million kilometers). The view is from 13 degrees below the equator. Enceladus, one of Saturn's 31 known moons, appears near the south pole at the bottom of the image.
The differences between the Hubble and Cassini images are mainly due to the different sets of filters used.
Over two decades have passed since a spacecraft last visited Saturn ? NASA's Voyager-2 flew by Saturn in August 1981. Since 1990, Hubble has produced high-resolution Saturn images, tracking storms and auroral activity while providing crisp views of the rings over time and from various angles.
Cassini will begin a four-year mission in orbit around Saturn when it arrives on June 30, 2004 PDT (July 1,
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2004 UTC). Six months later it will release its piggybacked Huygens probe for descent through Titan's thick atmosphere.
The Space Telescope Science Institute is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract with the Goddard Space Flight Center, Greenbelt, Md. The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency. The Cassini-Huygens mission is a cooperative mission of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL.
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2004 UTC). Six months later it will release its piggybacked Huygens probe for descent through Titan's thick atmosphere.
The Space Telescope Science Institute is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract with the Goddard Space Flight Center, Greenbelt, Md. The Hubble Space Telescope is a project of international cooperation between NASA and the European Space Agency. The Cassini-Huygens mission is a cooperative mission of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL.
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facet_what:
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Jupiter
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Jupiter
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Sun
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Sun
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Earth
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Earth
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Voyager
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Voyager
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Saturn
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Saturn
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Cassini
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Cassini
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TRACE
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TRACE
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Titan
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Titan
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Enceladus
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Enceladus
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COMPASS
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COMPASS
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Cassini Orbiter
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Cassini Orbiter
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Cassini-Huygens
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Cassini-Huygens
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Hubble Space Telescope (HST)
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Hubble Space Telescope (HST)
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Huygens Probe
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Huygens Probe
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Imaging Science Subsystem (ISS)
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Imaging Science Subsystem (ISS)
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Jupiter
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Jupiter
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Washington
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Washington
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Jet Propulsion Laboratory
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Jet Propulsion Laboratory
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California
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California
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Saturn
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Saturn
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Arizona
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Arizona
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Enceladus
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Enceladus
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Jet Propulsion Laboratory (JPL)
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Jet Propulsion Laboratory (JPL)
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Washington, D.C.
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Washington, D.C.
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March 2003
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March 2003
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March 2004
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March 2004
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May 26, 2004
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May 26, 2004
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May 16, 2004
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May 16, 2004
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March 22, 2004
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March 22, 2004
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August 1981
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August 1981
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June 30, 2004
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June 30, 2004
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July 1, 2004
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July 1, 2004
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2004
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2004
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1981
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UID:
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SPD-HUBBLE-STScI-200 4-18e
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SPD-HUBBLE-STScI-200 4-18e
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original url:
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original_url
original url
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Release Date:
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May 26, 2004 04:00 PM (EDT)
Release_Date
May 26, 2004 04:00 PM (EDT)
Release Date
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